they've taken down the fbi website, doj's website, gone after motion picture industry. they're a very credible organization, have a lot of clout on this internet. leaderless organization, sort of ambiguous leadership. a lot of global support. right now they're asking their global supporters to be on call for this operation last resort, they're calling it. very ominous warning for the u.s. government. >> this story has changed a lot in the last two hours and we're sure it will change eventually in the next two hours. we'll stay on top of it. >> of course. >>> action by congress to keep guns out of the wrong hands. big march, a rally, is expected to get under way an hour from now. emily schmidt is at the national mall. she joins us now. how big a crowd are we expecting there today? >> reporter: randi, good morning to you. it's a cold morning in washington. so a lot of people would rather be inside. organizers think that thousands of people will say forget the cold, they believe in the cause. and they expect thousands of people to be here later today, beginning in about an